100121010001121 has 4 divisors (see below), whose sum is σ = 102251244256512. Its totient is φ = 97990775745732.

The previous prime is 100121010001099. The next prime is 100121010001157. The reversal of 100121010001121 is 121100010121001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100121010001121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121010007121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065117127625 + ... + 1065117127718.

It is an arithmetic number, because the mean of its divisors is an integer number (25562811064128).

Almost surely, 2^{100121010001121} is an apocalyptic number.

It is an amenable number.

100121010001121 is a deficient number, since it is larger than the sum of its proper divisors (2130234255391).

100121010001121 is an equidigital number, since it uses as much as digits as its factorization.

100121010001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130234255390.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100121010001121 its reverse (121100010121001), we get a palindrome (221221020122122).

The spelling of 100121010001121 in words is "one hundred trillion, one hundred twenty-one billion, ten million, one thousand, one hundred twenty-one".